Question

1-I have three user controls.
2-I added them to AJAX TabContainer on my default.aspx page

<asp:TabContainer ID="TabContainer1" runat="server">
            <asp:TabPanel runat="server" ID="GroupOne">
                <HeaderTemplate>
                    1
                </HeaderTemplate>
                <ContentTemplate>
                    <SUR:GroupOne ID="group1" runat="server" />                  
                </ContentTemplate>                     
            </asp:TabPanel>
            <asp:TabPanel ID="GroupTwo" runat="server">
                <HeaderTemplate>
                    2
                </HeaderTemplate>
                <ContentTemplate>
                    <SUR:GroupTwo is="group2" runat="server" />
                </ContentTemplate>
            </asp:TabPanel>
           <asp:TabPanel ID="GroupThree" runat="server">
                <HeaderTemplate>
                    3
                </HeaderTemplate>
                <ContentTemplate>
                    <SUR:GroupThree ID="grup3" runat="server" />
                </ContentTemplate>
            </asp:TabPanel>
        </asp:TabContainer>

3- in the first user control i have image-button

<asp:ImageButton ID="ImageButton1" runat="server"  />

4- I have this code in my default.vb

Public Sub movit()
    GroupThree.Enabled = True
    TabContainer1.ActiveTab = GroupThree
End Sub

so how can i execute that sub when i click on the image button in the user-control??

Answer 1

I believe you need to use a delegate to achive this. You can try followings

In your ascx.cs or vb file Add a delegate inside the namespace but outside the UserControl class.

   public delegate void ImageButtonClickEventHandler(Object sender, EventArgs args);

Inside UserControl class add an event using delegate.After that call the delegate inside ImageButtonClick event.

  public event ImageButtonClickEventHandler ImageButtonClickEvent;

private void imageButton_Click(object sender, System.EventArgs e)
    {
        if(ImageButtonClickEvent!= null)
        {
            ImageButtonClickEvent(sender,e);
        }
    }

In your aspx page add this inside page load event.

UserControl1.ImageButtonClickEvent+=new ImageButtonClickEventHandler(UserControl1_ImageButtonClickEvent);

Finally declare UserControl1_ImageButtonClickEvent function

private void UserControl1_ImageButtonClickEvent(Object sender, EventArgs args)
    {       
        //Call your methods
    }